'''
Mission 6: Heartbeat
Spicy Remix - 1st option
-- One solution for avoiding runtime error
   (there are many possible solutions)
-- Adds another if statement with a break (2A)
'''
from codex import *
from time import sleep

delay = 1

while True:
    # one heartbeat
    display.show(pics.HEART)
    sleep(delay)
    display.show(pics.HEART_SMALL)
    sleep(delay)

    if buttons.was_pressed(BTN_A):
        delay = delay + 0.2

    if buttons.was_pressed(BTN_B):
        if delay > 0.2:
            delay = delay - 0.2

    if buttons.was_pressed(BTN_D):
        break